Appropriate names are: Lan (Yun Lan, Twilight, Lan, Haze), Ai (amiable, amiable), Kai, Ai (Bai Xue) and Yi (Yi, Yi, Yi).
I don't know if your baby is a boy or a girl.
The first armor: gold
Homonym: Hai, Kai, Jia, Kai, Fu, Ba, Qi, Lu, Qi,
Hong Kong Language Society Cantonese spelling: hoi2 (treble)
Related words: armor, armored horse
English: Armor
Listen to pronunciation online: http://humanum.arts.cuhk.edu.hk/Lexis/lexi-can/.
I am a professor of Cantonese in an American university. Looking up many dictionaries, the Cantonese pronunciation of this word is homophonic with the word "sea".
The boy's name can be written on this armor.
References:
Huang Xiling: Yin Yue Yun Hui (adapted edition) (Hong Kong: Zhonghua Book Company, 199 1)
Li zhuomin, ed Li's Chinese Dictionary (2nd Edition) (Hong Kong: Chinese University Press, 1989)
Edited by Zhou Wuji and Rao Bingcai. Cantonese Standard Phonetic Vocabulary (Hong Kong: Commercial Press, 1988)
He co-edited with Wen Hui and Zhu Guofan. Vocabulary of Cantonese Phonetics (2nd Edition) (Hong Kong: Hong Kong Education Book Company, 200 1).